Locomotive driving wheel hub and liner structure



March 9, 1943. J. J. HENNESSY Filed Dec. 4; 1940 l4. FIG/1L.

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hi INVENTOR.

BY JAMES J. HENNESSY Patented Mar. 9, 1943 LOCOMOTIVE DRIVING WHEEL HUB AND LINER STRUCTURE James J. Hennessy, Montclair, N. J.

Application December 4, 1940, Serial No. 368,428

6 Claims.

The invention relates to railway rolling stock running gear, and more particularly to liners provided for taking wear between wheel hubs and adjacent axle box faces.

Such liners are usually of softer material than the metal of the hubs and boxes and, after wearing down, may be replaced and thereby serve to maintain minimum play between the wheel hubs and axle boxes longitudinally of the axles.

Sometimes such liners are made of one piece surrounding the axle, in which case they must be applied to the axle before the wheel is placed thereon and the wheel must be removed if the liner is to be replaced. Sometimes the liners are made in two or more arcuate segments which may be applied to the axle and replaced without disassembling the axle and wheel. Such two-part liners are secured by welding or otherwise to the box or to the wheel or to each other. With either of these constructions, the liner may wear down or be broken and drop from the axle leaving the wheel and box free to play an undesirable amount with possibility of derailments or other accidents.

The main object of the present invention is to permit of the easy application of a hub liner or a material to take up lateral movement without the necessity of dropping wheels or other excessive work.

Another object is to utilize a hub liner in two pieces which can be kept in position without these pieces being welded together or attached to either the box or the wheel hub; and further to provide a liner which has lubrication on both sides of same, such lubrication permitting the liner to move or revolve with the wheel, thus reducing the amount of friction against either side of the liner.

Another object is to prevent loss of a liner as described.

Another object of the invention is to facilitate the replacement of a worn or broken liner.

These and other detail objects of the invention as will appear from the following description. are attained by the structure illustrated in the accompanying drawing, in which- Figure 1 is a vertical section through the hub of a locomotive driving wheel and the adjacent axle box and associated parts including the hub liner construction embodying the present invention.

Figure 2 is an elevation of the liner structure, the same being broken away in part to show the liner retainer in elevation. The figure also shows in section the axle and a portion of the driver box top wall, the figures taken approximately on the line 2-2 of Figure 1.

Figure 3 is a vertical section corresponding to a portion of Figure 1 but showing the assembly of the liner parts with the wheel hub and box on an enlarged scale.

The 'wheel hub l is pressed onto the axle endportion 2 in the usual manner and the axle journal 3 is fitted with a bearing 4 seated in the top wall 5 of the axle box which supports the locomotive frame 6 through spring equalizing bars 7, or

in any other manner well recognized in the art.

A ring-like liner in is applied to the inner face of hub l and has an annular boss l fittingloosely 1 in an annular recess or counterbore l2 provided in the inner face of the wheel hub. The adjacent-'- face of the box is turned down to provide a boss I3 corresponding generally to the inwardly projecting face of the Wheel hub, and a band 14 isfitted. over the periphery of boss l3. Preferably the shouldered portion of boss I3 is grooved as indicated at [5 and the corresponding portion of band I4 is provided with a rib it for holding the band against movement longitudinally of the axle. Band M projects from the box face to surround and overlap a substantial portion of liner I 0 so that the latter is retained in position between the wheel hub and box even though the liner should be worn down very thin or should break into two or more parts.

Preferably the liner and the retaining band are each made in two parts.

bronze, brass, or similar material although, if the driving box has its hub face built up with bronze or brass, then the liner may be made of grey iron or steel.

The liner is apertured at l9 to provide for lubrication on both faces and, accordingly, thrusts between the wheel and box may result in rotation of the liner relative to either or both of these parts, and wear of the liner will be less for a given mileage than if the liner were attached to the hub or to the box.

The liner may be renewed or removed without disassembling the wheels by removing the pedestal binder 20, cellar bolts 2! which extend The inside diameter. of the liner is slightly larger than the outside through lugs depending from the box cellar 22 and any shoes or wedges with which the pedestal legs are fitted. After band M has been removed by detaching bolts H, the box may be wedged away from the wheel hub far enough to remove and replace the liner, after which the band is reapplied and the replacement liner will be retained against removal.

Clearances are shown between the periphery of boss H and the counterbore in the wheel hub and between the opposing peripheries of liner in and band l4 and between the upright faces of the liner and box boss l3. These clearances are exaggerated in the patent drawing for better illustration. It would be understood they are fitted to each other to avoid play but to accommodate relative movement without undue friction.

It is not essential to the general spirit of the invention that all the features illustrated and described be included, and the exclusive use of such modifications of the structure as come Within the spirit of the claims is contemplated.

What is claimed is:

1. In railway wheel and axle box structure, a box wall having an annular boss on its wheel opposing face, a band surrounding said boss and removably secured thereto and being split for application to and removal from said boss while the wheel, axle and box assembly is maintained, the band projecting beyond the outer face of said boss to a vertical plane adjacent the opposing face of the wheel hub, said hub having an annular recess surrounding its axis, the depth of which recess approximates the lateral extension of said band beyond said boss, and a liner applied to the inner face of said hub and projecting therefrom towards said box face and being surrounded by said band, said liner having a boss extending into the bottom portion of said hub recess.

2. In an assembly including an axle, an axle box for supporting the axle load, a wheel pressed on the axle and having a hub, said box and hub having opposing vertical faces, a split liner applicable laterally about said axle between said faces, and a radiall split annular retainer member between the Wheel hub and the end of the box removably secured to said box and removable therefrom while the assembly of the axle, box and wheel is maintained and projecting longitudinally of the axle beyond the end of the box and. about said liner to hold said liner in functioning position without interfering with the rotation of the liner with the axle and hub or with the play of the liner and hub to and from the box.

3. A structure of the class described comprising a plural-part liner split from its center towards its periphery to provide for application of its segments about a railway wheeled axle transversely of the axle axis at a point between the hub of a Wheel and the face of an adjacent axle box assembled with the axle to take wear resulting from the end thrust of the wheel hub and box towards each other, said liner being rotatable with the wheel hub relative to the box, a pluralpart band split from its center towards its periphery for insertion between opposing faces of the wheel hub and the Wheel box and elements accessible, while the axle, wheel and box are assembled, for holding the band to the box, the band having elements projecting endwise from the axle box to enclose the periphery of said liner, and means detachably securing said band to the axle box.

4. A' structure as described in claim 3 in which the liner has a circular periphery and the retaining band comprises an annulus surrounding the liner periphery.

5. In a railway wheel, axle and, axle box structure, a box wall having an annular boss projecting from its wheel opposing face towards the wheel hub, a sectional band surrounding the periphery of said boss, detachable means securing the band sections towards each other to clamp them on the periphery of said boss, said band projecting beyond the outer face of said boss longitudinally of the axle, a sectional liner applied to the face of the Wheel hub and extending therefrom towards said boss and being sur rounded and normally retained in position on the hub and around the axle by the projecting portion of said band.

6. A railway wheel and axle box structure as described in claim 5 in which the boss on the box wall has a peripheral groove and the band mounted thereon has a flange seated in said groove to hold the band against movement lengthwise of the axis of the wheel and box.

JAS. J. HENNESSY. 

